Drier.



PATENTED'DEU. 19', 1905. J. W. BILES.

DRIER.

APPLICATION FILED MAR. 1, 1905.

WITNESSES.

JOHN W. BILES, OF LOUISVILLE, KENTUCKY.

DRIER.

Specification of Letters Patent.

I Patented Dec. 19, 1905.

Application filed March 1, 1905. Serial No, 247.946.

To all whom it may concern:

Be it known that I, JOHN WV. BILES, a citizen of the United States, anda resident of Louisville, in the county of Jeflerson and State ofKentucky, have invented a new and Improved Drier, of which the followingis a full, clear, and exact description.

My invention relates to driers, and more particularly to means forapplying heat thereto. Its principal objects areto provide an airconduitwhich will uniformly distribute the heat to the drying-chamber withoutdanger of scorching the material operated upon and which may be readilyrepaired, if necessary.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding" parts in all the views.

Figure 1 is a central vertical longitudinal section through oneembodiment of my invention. Fig. 2 is a vertical transverse sectiontherethroug h on the line 2 2 of Fig. 1. Fig. 3 is a similar viewshowing the heating-conduit and its more closely associated partsenlarged, and Fig. 4 is an enlarged longitudinal sectional detailthrough the meeting portions of adjacent conduit-sections.

I have here illustrated a drying-chamber, which in the present instanceis in the form of acylinder 10, supported upon peripheral rings 11,which rest upon pairs of suitably-journaled rolls 12 12. The cylindermay be rotated through a pulley .13, fixed upon an extension of thejournal of one of these supporting-rolls, and may be lined at 14. It ispreferably provided with longitudinally-extending elevating members orflights l5 and 16, which are shown as in the form of alternate L and 2bars, secured to the interior of the cylinder. The material to be driedmay be delivered to the cylinder through a stationary throat 17,extending into one of its open ends, while the opposite end of saidcylinder projects into a discharge-head 18, from which the driedmaterial is removed by a suitable conveyer 19. Coacting contact-faces 2O20 are preferably applied to the cylinder and the throat and head toinsure tight joints.

Connected to the discharge-head is shown a supply-conduit 21, leadingfrom a furnace or some source of heated air and situated longitudinallyof the cylinder, and in alinement with the supply-conduit is aheating-conduitA, its

. end adjacent to the supply-conduit being open and its oppositeextremity extending into proximity with the feed-throat. Thisheating-conduit preferably comprises a series of tubular sections 22 ofgradually-decreasing diameter as they go from the discharge end of thecylinder toward the inlet. At the adjacent ends of the sections areopposed and outwardly-extending projections or flanges 23, connected toone another by bolts 24: and being spaced to leave circumferentialopenings by thimbles 25 encircling the bolts. From the flangesconveniently held in place between them and the thimbles project arms26, having outer angular ends 27, upon which are supporteddeflecting-rings 28, which surround the spaces between the sections.Rods 29 are shown as radiating from a portion of these rings and areattached at their outer ends to the cylinder, thus serving to supportthe heating-conduit axially of said cylinder. Within the outlet end ofthe heating-conduit is a head 30, supported by angular brackets 31 andspaced from the conduit at its periphery.

The portion of the conduitAinto which the supply of heated air enters ispreferably provided with insulating means to avoid the scorching of thematerial by the comparatively high temperature at this point. For thispurpose I have shown an outer Wall 32 converging from the end sectiontowardits extremity and furnishing adead-air space. Ashield 33 may bemounted upon the inside of the head and extend over the space betweenthe juncture of the conduit to prevent material from dropping throughdirectly in the path of the entering air.

The cylinder being rotated at the desired speed and the material to bedried introduced through the throat, the material is then elevated bythe flights and dropped through the cylinder upon and in proximity tothe heating-conduit. The hot air entering said conduit passes toward thefeed end of the machine and being checked by the decrease in diameterbetween the sections is retarded and passes through the intermediatespaces, where it strikes the encircling rings and is deflected in bothdirections, thus being effectively delivered to the interior of thecylinder. At the same time these deflecting-rings shield the spaces andrender it impossible for thefalling substances to enter them, while theprojection of the flanges from the sections guards against the movementof material along the exterior of the conduit into said spaces. Thesuccessive sections may approximate in diameter the quantity of airwhich is present in the conduit for discharge at each space, the openingleft between the head 30 and the last section being such thata properspace is provided for the outflow of the remainder of the air. At theoutlet end of the cylinder, after the material has come under theinfluence of the air from each of the spaces between the sections andthe radiation from the sections themselves, it is discharged into thehead and removed by the conveyer without endangering it by the intensityof the heat of the entering air. This method of construction alsofurnishes a ready means for the removal and replacement of any worn-outsection or associated elements, each of said sections being capable ofseparation from its companions by the Withdrawal of theconnecting-bolts.

4 Having thus described my invention, I claim as new and desire tosecure by Letters Patent 1. The combination with a drying-chamber, of aheating-conduit extending into the chamber and comprising sectionsbetween which are spaces, and deflectors extending outside the sectionsand opening at each side of the spaces.

2. The combination with a drying-chamber,

of aheating-conduit extending into the chamber and comprising separatedsections having at their adjacent ends outward projections, anddeflectors carried by the projections.

3. The combination with a drying-chamber, of a heating-conduit extendinginto the chamber and comprising sections having at their adjacent endsoutward projections, and spacing members interposed between theprojections.

4. The combination with a drying-chamber, of a heating-conduit extendinginto the chamber and comprising sections having at their adjacent endsoutward projections, spacing members introduced between the projections,and deflecting-rings supported upon the projections.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN W. BILES.

Witnesses:

MAMIE SHABEE, WVILLIAM T. HALE.

